| 杜民兴,孙玉霞,闫长增,李跃辉.一锅法制备1T/2H-WS2/WO3异质结用于紫外可见光催化的CO2还原[J].分子催化,2023,37(6):523-527 |
| 一锅法制备1T/2H-WS2/WO3异质结用于紫外可见光催化的CO2还原 |
| One-pot Synthesis of WS2/WO3 Heterojunction for UV-Visible-light-driven CO2 Reduction to CO |
| 投稿时间：2023-03-01 修订日期：2023-03-30 |
| DOI：10.16084/j.issn1001-3555.2023.06.001 |
| 中文关键词: 一锅法 WS2/WO3 异质结 CO2还原 无牺牲剂 紫外可见光 |
| 英文关键词:one-pot synthesis WS2/WO3 heterojunction CO2 reduction no sacrifice reagent UV-Visible light |
| 基金项目:The National Natural Science Foundation of China (Nos. 21633013 and 22102197) and CAS LICP Cooperative Fund of Collaborative Innovation Alliance for Young Scientists (HZJJ23-5). |
|
| 摘要点击次数: 558 |
| 全文下载次数: 345 |
| 中文摘要: |
| 采用一锅水热法制备了1T/2H-WS2/WO3异质结, 并利用XRD、SEM、XPS等对所制备的光催化材料进行了系统微结构表征. 研究发现该异质结催化剂可用水蒸汽作为电子供体, 利用可见光催化还原CO2, 以3.87 μmol?g?1?h?1的速率高选择性地生成唯一产物CO. 在紫外-可见光辐照下, 表现出更优异的催化活性(34.39 μmol?g?1?h?1). 经4次循环实验, 仍然表现出稳定的光催化二氧化碳还原效率, 证明其具有优异的稳定性. |
| 英文摘要: |
| Photocatalytic reduction of CO2 to produce energy-rich hydrocarbons without sacrificing reagents is of great significance. Here, the 1T/2H-WS2/WO3 heterojunction catalyst is prepared by one-pot hydrothermal method, which shows a prominent CO2 reduction performance with water as an electron donor, affording CO as the sole carbonaceous product at a production rate of 3.87 μmol?g?1?h?1 under visible light. Moreover, under UV-visible light irradiation, the 1T/2H-WS2/WO3 photocatalyst shows better catalytic activity and 34.39 μmol?g?1?h?1 yield of CO. Importantly, the stability test shows no distinctive performance degradation even after 64 h reaction. This work provides new insight for designing and fabricating semiconductor heterojunction photocatalysts with high efficiency for solar-energy conversion. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
